diff --git a/plugins/provisioners/cfengine/config.rb b/plugins/provisioners/cfengine/config.rb
index 3dcbce906..ccfbdd671 100644
--- a/plugins/provisioners/cfengine/config.rb
+++ b/plugins/provisioners/cfengine/config.rb
@@ -56,6 +56,19 @@ module VagrantPlugins
           @yum_repo_url = "http://cfengine.com/pub/yum/"
         end
       end
+
+      def validate(machine)
+        errors = []
+
+        valid_modes = [:bootstrap, :singlerun]
+        errors << I18n.t("vagrant.cfengine_config.invalid_mode") if !valid_modes.include?(@mode)
+
+        if @mode == :bootstrap
+          errors << I18n.t("vagrant.cfengine_config.policy_server_address") if !@policy_server_address
+        end
+
+        { "CFEngine" => errors }
+      end
     end
   end
 end
diff --git a/templates/locales/en.yml b/templates/locales/en.yml
index a4ea3d8da..ac2151974 100644
--- a/templates/locales/en.yml
+++ b/templates/locales/en.yml
@@ -11,6 +11,12 @@ en:
     cfengine_no_bootstrap: |-
       CFEngine doesn't require bootstrap. Not bootstrapping.
 
+    cfengine_config:
+      invalid_mode: |-
+        The mode must be 'bootstrap' or 'singlerun'
+      policy_server_address: |-
+        The policy server address must be set for bootstrapping.
+
     general:
       batch_unexpected_error: |-
         An unexpected error ocurred when executing the action on the